Device for combining the shockabsorbing and limiting action in couplings



Jan. 12, 1954 GREEN C. D. DEVICE FOR COMBINING THE SHOCK-ABSORBING ANDLIMITING ACTION IN COUPLINGS Filed Aug. 28, 1951 //\/L/E MTG/=6 CARL D.GREEN i atented Jan. 12, 1954 FHQE DEVICE FOR COMBINING THE SHOCK-ABSORBING AND LIMITING ACTION IN COUPLINGS Carl D. Green, Brush Prairie,Wash.

Application August 28, 1951, Serial N 0. 244,053

3 Claims. 1

This invention relates generally to spring tensioning devices.

The main object of this invention is to provide a device for combiningthe shock-absorbing and limiting action in a coupling.

A further object is to so unite springs in tandem that their strength isadded and that the resistance is improved.

I accomplish these and other objects in the manner set forth in thefollowing specification as illustrated in the accompanying drawing, inwhich:

Fig. 1 is a side elevation of the device not under tension.

Fig. 2 is a similar view showing it under in load.

Fig. 3 is a section taken along the line 3-3 in Fig. 1.

Fig. l is a section taken along the line 44 in Fig. 1.

Fig. 5 is a side elevation of a wire link.

Fig. 6 is a section through a modified form of runner.

Like numbers of reference refer to the same or similar parts throughoutthe several views.

Referring in detail to the drawing there is shown a pair of helicalsprings Ill and II arranged in tandem but coupled in parallel; that isto say, that while the spring I 9 is attached at one end to the couplingI2, it is connected at the other end by a link is passing through thespring .I I to the coupling I l. The spring I I, on the other hand, isattached at one end to the coupling I I and at its other end to a secondlink I5 passing through the spring 59 to the coupling I2.

A runner or collar I6 encircles both of the links it and I5 and holdsthe links against separation or fouling.

While the use of springs for this purpose, including the use of link I 3or I5, is well understood, it is thought that certain advantages arisefrom my construction including the adding of the strength of the springstogether with the equalizing and stopping action of the runner.

While a common use of the device would be in fishing tackle, it has, ofcourse, a wide variety ings I8 for the links I3 and I5.

of applications wherever spring tensioning or shock-absorbing devicesare required.

In Fig. 6 is shown a runner II with two open- Such runners are used withheavier units where the space between the adjacent ends is greater thanit would be in smaller units and in which the chances of fouling aremuch greater than in the smaller units.

It will be noted that each link I3 and I5 has a laterally turned eye I9through which the other link is passed and in which it guides.

I claim:

1. A pair of helical springs arranged in tandem and coupled in parallel,the adjacent ends of the two springs each having a link attached theretoand extending through the opposite spring to the end fastening thereofand a runner encircling both links through which they may slidably pass.

2. A pair of helical springs arranged in axial alignment and spaced fromeach other, each spring having a link attached to its outermost end andto the innermost end of the other spring, and means for limiting theapproach of the innermost ends of the springs.

3. A spring tensioning device comprising a pair of helical springsarranged in axial alignment, each of said springs having a linkextending from its outer end along its axis and fastening to the innerend of the other spring in which a load on the device will draw theinnermost ends of the springs together and a runner through which bothlinks pass, one end of each link guiding on the other link.

CARL D. GREEN.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,723,814 Scholl Aug. 6, 1929 2,189,979 Fender Feb. 13, 1940FOREIGN PATENTS Number Country Date 18,398 Great Britain 1905

